(Masterpiece, Best Quality, High Definition, Photorealistic), Stunning 50 year old MILF bent over and deeply penetrated in the anus by a massive muscle horse in a public swimming pool, surrounded by a mesmerized crowd watching in awe and excitement, extremely large, round and firm breasts, erect nipples, radiant and flawless complexion, completely naked, bent forward on her hands, her back deeply arched, her legs spread for stability, piercing blue eyes, (brilliantly shining, straight very long red hair:1.3), with silky texture cascading down her back, smooth cheeks flushed with excitement, (large and plump lips with red lipstick:1.3), slightly parted in pleasure, her hands detailed exactly with five perfectly formed fingers squeezing the edge of the pool, her anus completely exposed stretched deep and noticeable, (anus very large, wide, big hole), her wet and shaved pussy is glistening and clearly visible between her spread thighs, her toned legs are shaking slightly under the intense penetration, her arched back highlights her round and firm buttocks, the stallion, a massive muscular horse with jet black skin, a defined and dominant build, broad shoulders, defined chest, massive thighs, his torso slightly tilted forward as he plunges deep into her, his huge, thick, veiny cock visibly stretches her lower abdomen with each deep thrust, (giant cock:1.1), (anal penetration:1.2), (anus wide, convex, bulging), clear blue water reflecting bright lighting, vibrant and dynamic composition, highly detailed textures of the anus, realistic anatomy without distortion, exceptional clarity and contrast.